2008 Audi A4 vs. 2003 Audi A8
To start off, 2008 Audi A4 is newer by 5 year(s). Which means there will be less support and parts availability for 2003 Audi A8. In addition, the cost of maintenance, including insurance, on 2003 Audi A8 would be higher. At 3,936 cc (8 cylinders), 2003 Audi A8 is equipped with a bigger engine. In terms of performance, 2003 Audi A8 (276 HP @ 3750 RPM) has 59 more horse power than 2008 Audi A4. (217 HP @ 6300 RPM) In normal driving conditions, 2003 Audi A8 should accelerate faster than 2008 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2003 Audi A8 weights approximately 260 kg more than 2008 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Audi A4. In wet, icy, snow, or gravel driving conditions, 2003 Audi A8 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2003 Audi A8 (650 Nm @ 1800 RPM) has 350 more torque (in Nm) than 2008 Audi A4. (300 Nm @ 3200 RPM). This means 2003 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A4.
Compare all specifications:
| 2008 Audi A4 | 2003 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 2008 | 2003 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2974 cc | 3936 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 217 HP | 276 HP |
| Engine RPM | 6300 RPM | 3750 RPM |
| Torque | 300 Nm | 650 Nm |
| Torque RPM | 3200 RPM | 1800 RPM |
| Engine Bore Size | 82.5 mm | 81.1 mm |
| Engine Stroke Size | 92.8 mm | 95.5 mm |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1620 kg | 1880 kg |
| Vehicle Length | 4580 mm | 5060 mm |
| Vehicle Width | 1780 mm | 1900 mm |
| Vehicle Height | 1400 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 2770 mm |
| Fuel Consumption Overall | 9.7 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 70 L | 90 L |
